C++ Simulator

Open-source C++ projects categorized as Simulator

Top 23 C++ Simulator Projects

  • AirSim

    Open source simulator for autonomous vehicles built on Unreal Engine / Unity, from Microsoft AI & Research

    Project mention: Modding API for old game: Strategies to ensure it runs on older systems while not losing productivity? | /r/REGames | 2023-05-04
  • Bullet

    Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.

    Project mention: Does anyone know any good open source project to optimize? | /r/cpp | 2023-06-07

    I suspect most C++ physics libraries like Box2D (https://github.com/erincatto/box2d) or Bullet3 (https://github.com/bulletphysics/bullet3) could really benefit a lot from SIMD.

  • InfluxDB

    Collect and Analyze Billions of Data Points in Real Time. Manage all types of time series data in a single, purpose-built database. Run at any scale in any environment in the cloud, on-premises, or at the edge.

  • carla

    Open-source simulator for autonomous driving research.

    Project mention: Tesla braces for its first trial involving Autopilot fatality | news.ycombinator.com | 2023-08-28
  • webots

    Webots Robot Simulator

    Project mention: Robotics Simulation - Bridging the Gap Between Virtual and Real Worlds | dev.to | 2023-09-28

    Open Robotics Resources - Provides guides and documentation for robotics simulation.

  • Ripes

    A graphical processor simulator and assembly editor for the RISC-V ISA

    Project mention: Web GUI for the Ripes RISC-V simulator | news.ycombinator.com | 2023-10-09
  • habitat-sim

    A flexible, high-performance 3D simulator for Embodied AI research.

    Project mention: Break into CV with background in biological vision and neuroscience | /r/computervision | 2022-12-30

    Spot on! I think you grasped the general idea. During some of my 3d studies, I collected data about hand movements, eye movements and navigation paths within scenes, which could potentially be used for training data in robots (e.g. to train robot arm-suction grip, visual input and navigation respectively). I see projects like this https://aihabitat.org/, where my research seems quite relevant.

  • Blender-FLIP-Fluids

    The FLIP Fluids addon is a tool that helps you set up, run, and render high quality liquid fluid effects all within Blender, the free and open source 3D creation suite.

    Project mention: How to stop fluid simulation from exploding? | /r/blenderhelp | 2023-07-09

    If all else fails, you may want to consider a premium addon like FLIP Fluids, which in my experience feels more stable than the default fluid sim, though it may be a bit costly. Consider trying the demo.

  • Onboard AI

    Learn any GitHub repo in 59 seconds. Onboard AI learns any GitHub repo in minutes and lets you chat with it to locate functionality, understand different parts, and generate new code. Use it for free at www.getonboard.dev.

  • pioneer

    A game of lonely space adventure

    Project mention: SpaceTraders: A multiplayer game built on a free web API | news.ycombinator.com | 2023-05-08

    Not to be confused with Pioneer Spacesim, the remake of Elite 2, a free online game


  • gem5

    The official repository for the gem5 computer-system architecture simulator.

    Project mention: Hot Chips 2023: Arm’s Neoverse V2 | news.ycombinator.com | 2023-09-12

    The idea is to write a C++ model that that produces cycle accurate outputs of the branch predictor, core pipeline, queues, memory latency, cache hierarchy, prefetch behaviour, etc. Transistor level accuracy isn't needed as long as the resulting cycle timings are identical or near identical. The improvement in workload runtime compared to a Verilog simulation is precisely because they aren't trying to model every transistor, but just the important parameters which effect performance.

    Let's take a simple example: Instead of modeling a 64-bit adder in all its gory transistor level detail, you can just have the model return the correct data after 1 "cycle" or whatever your ALU latency is. As long as that cycle latency is the same as the real hardware, you'll get an accurate performance number.

    What's particularly useful about these models is they enable much easier and faster state space exploration to see how a circuit would perform, well before going ahead with the Verilog implementation, which relatively speaking can take circuit designers ages. "How much faster would my CPU be if it had a 20% larger register file" can be answered in a day or two before getting a circuit designer to go try and implement such a thing.

    If you want an open source example, take a look at the gem5 project (https://www.gem5.org). It's not quite as sophisticated as the proprietary models used in industry, but it's a used widely in academia and open source hardware design and is a great place to start.

  • littlenavmap

    Little Navmap is a free flight planner, navigation tool, moving map, airport search and airport information system for Flight Simulator X, Microsoft Flight Simulator 2020, Prepar3D and X-Plane.

    Project mention: How Can I Fly a Cessna 172 Across Europe | /r/MicrosoftFlightSim | 2023-06-20

    For flight planning I suggest using LittleNav Map. It's free and it can also follow along on your flights.

  • rotors_simulator

    RotorS is a UAV gazebo simulator

  • gazebo-classic

    Gazebo classic. For the latest version, see https://github.com/gazebosim/gz-sim

    Project mention: Unable to render window | /r/swaywm | 2023-06-07

    it is this one: https://github.com/gazebosim/gazebo-classic

  • metroboy

    A repository of gate-level simulators and tools for the original Game Boy.

    Project mention: Documentation for cycle accurate Game Boy CPU | /r/EmuDev | 2023-06-12

    If you want to go deeper, you can look at the reverse engineered schematic of most of the stuff except the CPU core in the DMG-CPU-Inside project. You could also consult the MetroBoy project, which builds on the previous project and aims to be accurate pretty much down to the logic gate level.

  • aitrack

    6DoF Head tracking software

    Project mention: How to get ACC head tracking with a webcam in Linux | /r/ACCompetizione | 2023-09-11

    Additionally you can use https://github.com/AIRLegend/aitrack to get good head tracking and you don't need to run it with the same WINE prefix, since it uses UDP to communicate. Just run it casually from your OS (via WINE for example). But OpenTrack still need to run in the same WINE prefix ofc.

  • qpp

    Modern C++ quantum computing library

  • qiskit-aer

    Aer is a high performance simulator for quantum circuits that includes noise models

    Project mention: Keep getting errors while trying to use Aer simulator | /r/QuantumComputing | 2023-06-02

    strange. i never faced this error while using the Aer library. could u perhaps provide the complete error? is it something like the one mentioned here?

  • picsimlab

    PICsimLab - Programmable IC Simulator Laboratory

  • quackle

    Quackle crossword game artificial intelligence and analysis tool

  • omnibase

    This repository has a simulator of an omniwheel drive robot.

  • QCSim

    Quantum computing simulator

    Project mention: Which is the best programming language for Quantum Computing? | /r/QuantumComputing | 2023-07-11

    I implemented one myself, just for fun: https://github.com/aromanro/QCSim I intend to extend/improve it further. For somebody that knows C++ maybe it's worth checking out.

  • Kite

    Kite: Architecture Simulator for RISC-V Instruction Set (by yonsei-icsl)

  • HFSimulator

    This project introduces a practical high-performance stand-alone and OS independent Ionospheric Channel Simulator. Full open source documentation is available here.

  • ufc

    Up Front Control panel for flight simulation, with special integration wirh DCS via DCS-BIOS

  • SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-10-09.

C++ Simulator related posts


What are some of the best open-source Simulator projects in C++? This list will help you:

Project Stars
1 AirSim 15,365
2 Bullet 11,324
3 carla 9,898
4 webots 2,802
5 Ripes 2,205
6 habitat-sim 1,973
7 Blender-FLIP-Fluids 1,537
8 pioneer 1,476
9 gem5 1,201
10 littlenavmap 1,105
11 rotors_simulator 1,099
12 gazebo-classic 1,087
13 metroboy 1,077
14 aitrack 890
15 qpp 477
16 qiskit-aer 406
17 picsimlab 393
18 quackle 145
19 omnibase 21
20 QCSim 16
21 Kite 12
22 HFSimulator 8
23 ufc 7
SaaSHub - Software Alternatives and Reviews
SaaSHub helps you find the best software and product alternatives